详解 Mysql查询结果顺序按 in() 中ID 的顺序排列

详解 Mysql查询结果顺序按 in() 中ID 的顺序排列

实例代码：

<select id="queryGBStyleByIDs" resultMap="styleMap">
   select style_num_id ,style_id,style_title,style_pic FROM gb_style where online = 1 AND is_hide = 0 and style_num_id in
   <foreach collection="styleNumIDs" item="styleNumId" separator="," open="(" close=")">
    #{styleNumId}
   </foreach>
   ORDER BY FIELD
   <foreach collection="styleNumIDs" item="styleNumId" separator="," open="(style_num_id," close=")">
     #{styleNumId}
   </foreach>
 </select>

最终输出sql如下:

select style_num_id ,style_id,style_title,style_pic FROM gb_style where online = 1 AND is_hide = 0 and style_num_id in (1,3,2,5)
order by field (style_num_id,1,3,2,5);

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来源：http://blog.csdn.net/qq_37107280/article/details/78033724